PEMODELAN DUA DIMENSI DATA GRAVITASI DI WILAYAH RIAU DENGAN METODE TALWANI (STUDI KASUS LOKASI - X)

Abstract

Observationof the gravity is conducted in Riau (Location - X). Observational data is processed in such a way to obtain the value of the gravity anomaly. In general, the gravity anomaly is composed of bougeranomaly, regional anomaly, and residualanomaly. High Bouguer anomaly and residual anomaly observed in the region the southarea, while the low gravity anomaly in the north area. Furthermore, the anomaly map generate by using two-dimensional modeling based on Talwani method. From two dimensiononal modeling (2-D)indicate that fault models due to the loss of mass in the middle (graben). This fault model is a system forming sediment in the study area.